Home / 143,616.75-198,062.08-89,906.65

Finding the Fourth Proportional to 143,616.75, 198,062.08 and 89,906.65

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Solution

The fourth proportional to 143,616.75, 198,062.08 and 89,906.65 is: 123,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,616.75 : 198,062.08 = 89,906.65 : x
  2. Step 2: Convert to fraction form
    143,616.75/198,062.08 = 89,906.65/x
  3. Step 3: Cross multiply
    143,616.75x = 198,062.08 × 89,906.65
  4. Step 4: Simplify right side
    143,616.75x = 17,807,098,104.83
  5. Step 5: Solve for x
    x = 17,807,098,104.83/143,616.75
  6. Step 6: Final answer
    x = 123,990.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.